****************************************************************************** From: "Richard Biagioni" Date: Wed, 24 Jun 98 21:37:20 GMT Subject: Chemical Ionization Question Organization: * Someone has recently told me that he has carried out GC/MS using chemical ionization employing n-butane (not isobutane) as the reagent gas, and that n-butane serves as a CH3+ transfer agent. I have not been able to find any reference to n-butane CI or to methyl transfer reactions in a wide variety of sources that I have checked. Anyone know anything about this? (I've asked him for a reference twice, and he's ignored me both times.) ****************************************************************************** From: Larry Phillips Date: Mon, 29 Jun 1998 11:45:23 -0400 (EDT) Subject: Re: Chemical Ionization Question Organization: * Dear Richard, In an earlier mailing, you inquired about the use of n-butane as a reagent gas in CI. I am not aware of any literature references to this (although a thorough search of the literature might turn up something). However, the following reference, although it may not be exactly what you want, might still be useful: T. Y. Yu and F. H. Field "Chemical Ionization Mass Spectrometry: n-Hexane and n-Octane as Reactants" Organic Mass Spectrometry, 8: 267-277 (1974). Hope this helps. Sincerely, Larry Phillips National Cancer Institute Frederick, MD 21701 301-846-1234 (voice) LP5Q@NIH.GOV